What are the U-shaped fasteners called?
You’ve seen those U-shaped metal pieces—but what are they actually called?
U-shaped fasteners are commonly known as U-bolts or staple nails. U-bolts secure pipes or rods to surfaces, while U-shaped nails, or fence staples, hold wire or mesh. Each has a specific industrial use.
These fasteners are essential in construction, electrical, and mechanical applications. Learn their names, uses, and types—and how Prime supplies them with ISO-certified reliability.
What are the U-shaped nails called?
They’re shaped like a “U” and used to fix wires into wood. But what’s the name?
U-shaped nails are called fence staples, U-nails, or staple nails. They are used to fasten fencing wire, cable, or mesh onto wooden posts.
These fasteners are simple but strong. Prime supplies custom galvanized staple nails for agricultural and construction use.
U-Nail Features
| Name | Common Use | Finish Options |
|---|---|---|
| Fence Staple | Barbed wire, fencing | Galvanized, plain steel |
| U-Nail | Light electrical cables | Stainless, black oxide |
| Staple Nail | Carpentry, mesh fastener | Bright, coated steel |
We once shipped 500,000 barbed staples to a livestock fence builder in Australia—each batch salt-spray tested and quality controlled at Prime’s factory.
What is an Au-shaped fastener called?
You might mean “U-shaped” fastener—commonly used in pipe clamps and automotive setups.
The U-shaped fastener used in mechanical and structural work is called a U-bolt. It wraps around round items like pipes and secures them to flat surfaces.
At Prime, we manufacture CNC-machined U-bolts with custom threads, plating, and markings for B2B clients worldwide.
U-Bolt Applications
- Mounting pipes to walls or ceilings
- Securing suspension parts in vehicles
- Anchoring round ducts and poles
We recently supplied hot-dip galvanized U-bolts for a Middle East water project. Client specs matched exactly, with ISO testing reports included.
What are those metal fasteners called?
Not every fastener has a screw head—some are pins, clips, or clamps.
Metal fasteners include U-bolts, anchor bolts, screws, rivets, clips, and washers. Each fastener has a specific use depending on load and environment.
Prime supports full fastener kits, including industrial stamping parts, CNC bolts, and plastic-inserted lock nuts.
Common Metal Fasteners
| Fastener Type | Typical Use |
|---|---|
| U-Bolt | Pipe and round bar support |
| Hex Bolt | Machinery, structural |
| Rivet | Aircraft panels, sheet metal |
| Cotter Pin | Axles and hinge retention |
| Anchor Bolt | Foundation and concrete mounting |
We offer clients full BOM (bill of materials) kits packed by type and labeled by spec—for everything from rail projects to wind farms.
What are 7 types of fasteners?
From bolts to clips—there’s a fastener for every job. Knowing the types saves you money and time.
The 7 most common fastener types are bolts, screws, nuts, washers, rivets, anchors, and clips. Each handles different loads and materials.
At Prime, we produce and source all 7 fastener types—customized to fit your assembly line or installation site.
The 7 Key Fastener Types
| Type | Function |
|---|---|
| Bolt | Clamps parts with nut + washer |
| Screw | Threaded directly into material |
| Nut | Secures bolt from the other side |
| Washer | Distributes load and reduces wear |
| Rivet | Permanent fastening for sheet metal |
| Anchor | Attaches parts to concrete or walls |
| Clip | Holds panels, wires, or trim in place |
For a European solar company, we packaged all 7 types in a project-specific fastener kit, reducing their logistics and warehouse sorting by 40%.
Conclusion
U-shaped fasteners include U-bolts and staple nails—each designed for specific holding tasks in construction or mechanics.
Need industrial-grade U-bolts or custom fasteners? Contact Prime today for a free quote, bulk order support, and ISO-certified one-stop hardware solutions—delivered worldwide.
